baber/WOPTO huggingface dataset:
Patent GB-691240-A (GB)
Title: Capacitor
Inventor: KILBY JACK ST CLAIR
IPC: H01G4/12
Filed: 1951-09-25
Abstract: 691,240. Electric condensers. GILOBEUNION, Inc. Sept. 25, 1951, No. 22415/51. Class 37. A condenser' includes an electrode bonded to a base, a thin layer of ceramic not greater than 0.003 inch and of high dielectric constant overlying and bonded to the electrode and base and cured by firing in situ and a second electrode bonded to the dielectric. On an insulating base 10, Fig. 1, preferably ceramic, is applied an electrode 12, e.g. of platinum paint or of palladium, rhenium or rhodium, upon which is applied a thin layer 16 not greater than 0.003 inch thick of an unfired ceramic, e.g. 88 per cent pure barium titanate, 10 per cent high viscosity ethyl cellulose N type, 2 per cent ester gum binder and a squeegee medium known as Dupont Squeegee Medium No. 5051; the assembly is then fired and an electrode 18 applied. A further layer of ceramic may be deposited on electrode 18, and a further electrode deposited on top, to form two condensers with a common electrode, Figs. 3, 4 (not shown). The base 10 preferably has a lower dielectric constant than the dielectric 16.
Patent GB-1154255-A (GB)
Title: Improvements in Tufting Machines
Inventor: COCK DOUGLAS GEORGE WOOD
IPC: D05C15/22
Filed: 1967-05-15
Abstract: 1,154,255. Tufting machines. EDGAR PICKERING (BLACKBURN) Ltd. 24 April, 1968 [15 May, 1967], No. 22452/67. Heading D1G. In a looper block for a tufting machine which includesregularly spaced slots 12 for the retention of loopers, end walls 14a, 14b of adjacent blocks are cut away in complementary fashion so that an end wall is formed of the same thickness as the walls separating the slots.
Patent GB-480425-A (GB)
Title: Improvements in and connected with brooms and brushes
IPC: A46B7/10
Filed: 1937-08-16
Abstract: 480,425. Brushes; handles. LINE, A. Aug. 16, 1937, No. 22467. [Classes 19 and 61 (i)] A brush or broom comprises bristles radiating from and carried by a twisted wire core which mid-way between its ends is received in a hole or slot in a block carried by a handle, and is securedtherein by a screw-threaded member. In one form, Fig. 1, the wire core 5 is clamped by a screw 8 in a block 3 attached to a handle 2 by a spike 1. In another form, Fig. 4, a block 9 bored to receive a handle 19 is provided at each end with a slot 12 which receives the core 14 of a brush which is retained by a screw 17 passing through a loop in the core or clamping it.
Patent GB-583676-A (GB)
Title: Improvements in or relating to brakes
IPC: F16D65/14
Filed: 1944-11-15
Abstract: 583,676. Brakes. SCHNELL, S. Nov. 15, 1944, No. 22590. [Class 103(i)] In a braking-system, an emergency application is made by a spring which is normally, e.g., whilst electric power is supplied to the prime mover of the machinery being braked, kept stressed, but inoperative, by fluid pressure means, the normal control of the brakes being effected by a master cylinder. The invention is described as applied to a brake comprising two shoes applied externally to a drum, the shoeoperating linkage being interconnected by a strut member which is lengthened to make an application, and contains the complete brake control mechanism. The strut is shown in Figs. 2, 3 which must be joined end to end. Pressure from a pedal-controlled master cylinder is supplied through a pipe 16 to the cylinder 20, and passes through a bore 42 in the piston 21 to a lower cylinder 24 having a piston 25 which is connected by a pin 26 to a sliding casing 28. A valve 45 is controlled by a solenoid 23 and always permits the flow of liquid, if the pressure difference is sufficient, from the cylinder 20 to the cylinder 24, but prevents flow in the opposite direction when the solenoid is excited. The valve comprises a seat 36 biassed by a spring 47 to abut on a shoulder 48, and a closure element 49 on a stem 50 carried by the movable member 51 of the solenoid. The seat 46 is forced away from the element 49 by the excess fluid pressure in the cylinder 20, and the fluid passes through channels 52, 56, 55, 44 to the lower cylinder. In Figs. 2, 3 the ends 19, 34 of the mechanism are separated to the fullest extent by the action of the spring 38, an emergency brake application having been made. The solenoid 23 is de-energized and the valve 45 is open to permit free flow between the cylinders 20, 24. When the driving-motor of the machine, e.g., a crane, is switched on, the solenoid is energized and the valve 49 closes. Operation of the pedal-master cylinder forces fluid past the valve 45 into the cylinder 24, the downward movement of the piston 25 thereby compressing the spring 38 between the flange 30 on the sliding casing 28 and the top of a sleeve 37 secured to the cylinder 24. The compression of the spring does not release the brake as the upward pressure of the fluid on the head 18 keeps the ends 19, 34 fully separated. Release is effected by easirig the force exerted on the pedal, the consequent fall in pressure in the cylinder 20 permitting the spring 32 to take off the brake shoes by pushing the cylinder 20 down over the piston and thus shortening the distance between the ends 19, 34. Normal fluid pressure brake application then continues until the solenoid is again de-energized.
Patent GB-533226-A (GB)
Title: Improvements in rate of climb indicators
IPC: G01P3/62
Filed: 1939-08-04
Abstract: 533,226. Electric indicating systems. BENDIX AVIATION CORPORATION. Aug. 4, 1939, No. 22729. Convention date, Sept. 2, 1938. [Class 40 (i)] A rate of climb indicator especially for aircraft comprises a Wheatstone bridge having arms of resistance material with a temperature coefficient differentially cooled in accordance with the rate of air-flow between a reservoir and an outlet to the atmosphere. As shown, the resistances 13, 17 are enclosed in casings and subject to flow to or from reservoir 10, flow from the reservoir during an ascent being directed by nozzle 12 on resistance 13 whereas the flow passes from pipe 15 to pipe 19 substantially without being directed on resistance 17. Flow in the reverse direction during descent has the opposite effect. The four arms may be differentially affected in pairs. The differential effect may be increased by suitable screens or valves, numerous constructions of conduits being described. The conduits may be provided with cooling fins.
Patent GB-670548-A (GB)
Title: Improvements in or relating to a method of insulating electrical coils
IPC: H01B3/42
Filed: 1949-09-02
Abstract: A method of insulating an electrical coil includes the step of vacuum impregnating the coil with a liquid, completely polymerizable resinous composition composed of from 50 to 90 per cent by weight of at least one polymerizable vinyl aryl compound having the formula <FORM:0670548/IV (a)/1> where R1 represents hydrogen or a methyl radical and R represents two radicals selected from hydrogen, methyl and halide, and the balance being an unsaturated ester reaction product derived by reacting (A) at least one acidic compound selected from maleic acid or anhydride, citraconic acid or anhydride and fumaric acid and a saturated straight-chain dicarboxylic acid having the carboxyl groups at the ends of the straight-chain, the chain having from 2 to 10 non-carboxylic carbon atoms, and no other reactive groups, the proportions of the unsaturated acidic compound in the mixture varying from 10 to 50 mole. per cent with (B) a molar equivalent of an aliphatic saturated glycol having no other reactive groups than the hydroxyl groups.  Suitable dicarboxylic acids include adipic, sebacic, azelaic, suberic, succinic, decamethylene dicarboxylic and diglycolic acids, and suitable glycols include ethylene propylene, diethylene and triethylene glycol and 1,5-pentanediol.  The reaction products of (A) and (B) are dissolved in the vinyl aryl monomer which may be styrene, alpha-methyl styrene, 2,4-dimethylstyrene, parachlorostyrene, parafluorstyrene, 2,4-dichlorostyrene, o-, m-, or p-methyl styrene, or alpha-methyl paramethyl styrene.  In an example of producing the reaction product to be dissolved in the vinyl aryl monomer a mixture of adipic acid and maleic anhydride was reacted with propylene glycol in a closed vessel through which CO2 was passed.  In another example sebacic acid replaced adipic acid.  Ascaridole, benzoyl peroxide or tert.-butyl perbenzoate may be added to the impregnating composition.
Patent GB-316194-A (GB)
Title: Improvements in and relating to methods of bonding layers of material together
IPC: C09J161/00
Filed: 1929-07-24
Abstract: 316,194. International General Electric Co., Inc., (Assignees of Allgemeine Elektricitõts-Ges.). July 24, 1928, [Convention date]. Void [Published under Sect. 91 of the Acts]. Adhesives.-The condensating products obtained from aldehydes and aromatic bodies containing NH2 or NH groups, or polyhydric phenols are utilized as adhesives for bonding together layers of material. They can be hardened by heat treatment, e.g. heating to 150‹ C. for about 30 secs. The product obtained from resorcin and paraformaldehyde may be employed, and urea is given as an example of a body containing an NH2 or NH group.
Patent GB-499226-A (GB)
Title: Improvements relating to perambulators
IPC: B62B9/18
Filed: 1937-08-20
Abstract: 499,226. Perambulator underframes; mudguards. TAN SAD, Ltd., and SHOTT, P. Aug. 20, 1937, Nos. 22835 and 22836. [Class 108 (ii)] [Also in Group XXXI] A one-piece, sheet-metal perambulator chassis a has peripheral strengthening-flanges a3, a4 and peripheral projections b for the attachment of spring or like means associated with the wheel mechanism. The chassis shown in Fig. 2 is formed from an apertured blank, the flanges a<3>, a<4> being bent at rightangles thereto, and protuberances a<6> folded so as to lie within or, as shown, outside the flanges a<3> and riveted or welded &c. thereto or clamped thereto by clinching over tabs on the flanges. Corner slots a8 are provided for the reception of the projections b which comprise strips welded, riveted, &c. in position and to the upper and lower parts of which are adapted to be secured respectively a parallelogrammic folding frame and the springs &c. associated with the wheel mechanism. Alternatively, ears may be projected from the blank to accommodate the upper and lower parts of the perambulator. A stamped sheet-metal mudguard extending over a pair of front and rear wheels may be formed integral with the chassis, or, as shown in Fig. 4, a channel-section guard c may be secured to the chassis by tabs a<9> on the chassis engaging slots c<3> on the guard, the tabs finally being clinched over, and to prevent positive removal of the guard, a tab c<4> on the lower edge of the guard is adapted to be bent beneath the chassis in a direction opposite to that of the other tabs.
Patent GB-1347754-A (GB)
Title: Foldable lamp shade
IPC: F21V1/06
Filed: 1971-04-19
Abstract: 1347754 Foldable lamp shade STAFF & SCHWARZ GmbH 19 April 1971 [13 March 1970 (2) 25 Nov 1970] 22916/71 Heading F4R A foldable lamp shade has a covering material 10 of textile or synthetic material fastened to tensioning rods 11 by eyelets or loops 12. Spreading rods 14 and 15 are pivotally attached to the rods 11 and to slides 16, 17. A bearing tube 21 is provided within the slides 16, 17 which also passes within a member 19 holding three lamp bulbs 20. The bearing tube has a nut 25 secured at its lower end by a screw 27 passing therethrough to engage a supporting tube 26. In other embodiments the shade may have only one set of spreading rods (28, Fig. 4, not shown) or may be in the form of a dome, barrel, cone or sphere having one or two sets of spreading rods (Figs. 7 and 9 respectively, not shown). In an alternative embodiment the bearing tube (39) may be secured with a spring lever (41, Fig. 10, not shown).
Patent GB-1213868-A (GB)
Title: Accelerometers
Inventor: ELVER JOHN STANLEY
IPC: G01P15/14
Filed: 1968-05-14
Abstract: 1,213,868. Fibre optics. BRITISH AIRCRAFT CORP. Ltd. July 15, 1969 [May 14, 1968], No.22917/68. Heading G2J. [Also in Division G1] A gyroscope having a rotor 1 with a spin axis 2 and supported in a frame 12 by means of inner, middle and outer gimbals, 3, 6, 9 respectively incorporates a device for measuring the acceleration of the gyroscope in the direction of the axis 2, the device comprising a pair of linearly ruled gratings 16, 19 mounted on the gimbal 3 parallel to each other and to the axis 2 but with their rulings extending substantially perpendicular to the rotor axis 2 and slightly skew to each other the grating 19 being fixed and the grating 16 being carried by two flat spring discs (not shown) at the ends of a cylindrical housing 13 on the gimbal 3, so that it is displaceable relative to the grating 19 on acceleration along the axis 2, a lamp 28 and associated optical fibre bundles 27, 25 for illuminating the gratings to form Moir� fringes, and further bundles of optical fibres 44, 48, 50 for detecting the fringes and transmitting them to an interpreting device (not shown) outside the gyroscope which detects movement of the fringes due to acceleration lightpassingfrom one fibre bundle to another across gaps between adjacent ends of the bundles which are disposed concentrically with respect to the bearing axes of the gimbals. The grating 16 is mounted between the two spring discs which are arranged to have a linear stress/strain relationship. The optical fibre bundle 44 is formed of four separate optical fibre bundles each terminating adjacent the grating 16 and fitted with light filters of different colours. Acceleration along the axis 2 will cause relative movement between the gratings 16, 19 and thus movement of the Moir� fringes along the line of the light filters in a direction dependent on whether the acceleration is positive or negative. The interpreting device is arranged to detect the number of fringes which moves through one of the light filters in a full shift and the direction in which the fringes move by noting the order in which the coloured light filters are illuminated. The device produces a signal proportional to the magnitude of the acceleration and its direction and this may be fed to a control system for the vehicle on which the gyroscope is mounted.
Patent GB-924253-A (GB)
Title: í¸-allopregnene and process for its manufacture
IPC: C07J5/00
Filed: 1959-07-03
Abstract: The invention comprises $D9(11)-16a -methyl-allopregnene-17a ,21-diol-3, 20-dione or a 21-ester thereof and a process for the manufacture of D 9(11)-16a - methylallopregnene-17a ,21-diol-3, 20-dione or the 21-acetate thereof wherein D 9(11)-16a - methylallopregnene-3b , 17a -diol-20-one is treated with 2 to 2.5 mols of bromine, the resulting polybromide is heated in a dialkyl-formamide with lithium acetate, the free 3-hydroxy group is oxidised to a keto group, and, if desired, the 21-acetoxy group is hydrolysed.  As dialkyl formamide there may be used dimethyl formamide. Specification 924,254 is referred to.
Patent GB-791651-A (GB)
Title: Improvements in or relating to the purification of titanium tetrachloride by distillation
Inventor: COATES WILLIAM HENRY
IPC: C01G23/02
Filed: 1954-08-09
Abstract: <PICT:0791651/III/1> In the purification by distillation of titanium tetrachloride, such as that produced by chlorination of titanium ores in the presence of carbon, the liquid is vaporized by circulating it between a tank and a calandria having substantially vertical tubes which are externally heated by a heating-medium such as steam, and the arrangement is such that liquid titanium tetrachloride is carried up the interior of the tubes by the lifting-action of the vapour bubbles therein.  Overheating is thereby avoided; and since only a small quantity of liquid is present in the tubes at any time, the risks attendant upon tubefailure (hydrolysis of TiCl4 &c.) are diminished.  The hot tetrachloride is returned to the tank below the surface of the liquid therein.  By adding a purification agent, e.g. a mineral, animal or vegetable oil, soap, hydrogen sulphide or copper powder, to the titanium tetrachloride it is possible to render the vanadium constituent non-volatile; furthermore the distillate contains not more than 0.01 per cent carbon.  In the apparatus shown, tank 14 has a capacity of 20 cubic meters, and calandria 16 contains mild steel tubes (10 ft. long and 2 inches diam.) comprising a heating surface of 200 square feet.  Down-leg 15 leads from just above the bottom of tank 14 to the lower manifold of the calandria. Tank 14 is also connected to packed-column 18 and condenser 19.  A preliminary small quantity of titanium tetrachloride was pumped from storage tank 11 into tank 14, and raised to the boil by circulation through the steam-heated calandria.  Tank 14 was then gradually filled to contain 15 cubic meters of titanium tetrachloride through thermostatically-controlled valve 13 so that the liquid was maintained at the boil.  The normal working steam-pressure corresponded to 120 p.s.i.g.  An addition of 0.5 per cent by weight of an olive oil soap was made, and the boiling was continued under reflux for one hour.  The liquid was thereafter distilled, first with reflux to remove the greater part of the silicon tetrachloride, and later without reflux until the volume of the distilland was reduced to 5 cubic meters.  The distillate was removed from the system via cooler 22.  Tank 14 was then recharged with crude titanium tetrachloride, and the cycle conducted as before except that only 0.2 per cent by weight of soap was added.  In this way 20 cycles were conducted before the distilland became so viscous that the rate of heat transfer was reduced to one-half the initial value.  This distilled, which amounted to 2 1/2 per cent of the total volume of feed, was discharged via conduit 32 to sludge tank 33 for subsequent separate recovery of titanium tetrachloride.
Patent GB-584080-A (GB)
Title: Improvements in or relating to baby soothers or the like
IPC: A61J17/00
Filed: 1944-11-23
Abstract: 584,080. Moulding baby soothers. MIDDLETON, F. A. Nov. 23, 1944, No. 23276. [Class 87 (ii)] [Also in Group VI] The guard 7 of a baby soother is moulded in plastic, preferably thermoplastic, material in a mould 5, 8 around the open end 2 of the rubber teat 1, which may be closed by a conical plug 3 of the same plastic material, to form an interlocked integral unit. The guard may have a boss 9 which is channelled to receive a split ring handle. Alternatively a handle with or without a guard may be moulded around the teat.
Patent GB-388067-A (GB)
Title: Improvements in or relating to high frequency electrical oscillatory systems
IPC: H03F1/08
Filed: 1931-08-18
Abstract: 388,067. Valve amplifying circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Marconi House, Strand, London, GREEN, E., Penrose, Long Stomps, Chelmsford, and ROBB, F. G., 8, West Belvedere Road, Danbury, both in Essex. Aug. 18, 1931, No. 23283. [Class 40 (v).] Parasitic oscillations of harmonic frequency, due in part to the interelectrode capacities of the valve, are eliminated by inserting an adjustable reactance, such as the coil 6, Fig. 1, connected in series with a condenser 5 between the grid of the amplifier 1 and the end of the main oscillatory circuit 3, 4 remote from the anode. The inductance 6, which may be shunted by a condenser and damping resistance, is adjusted so that the parasitic frequency does not coincide with any harmonic frequency of the main oscillation circuit. In Fig. 3 two amplifiers 1, 1<1> are energized in push-pull from a " drive " coil 2<1>, and feed a centre-tapped output circuit 3, 4, the anti-parasitic coils 6, 6<1> being connected as shown. In Fig. 4, the eliminating circuit 10, 11 is separate from but coupled equally to both grids, either through the leads, as shown, or through coupling-coils, in order to prevent any retroaction on the main oscillatory circuit 3, 4. Specifications 148,445, 148,447, 241,289, 270,800, and 313,111, [all in Class 40 (v), Wireless signalling &c.], are referred to.
Patent GB-187785-A (GB)
Title: Electrically lighted sewing machine
IPC: D05B79/00
Filed: 1921-09-02
Abstract: 187,785. Fairweather, W., (Singer Manufacturing Co.). Sept. 2, 1921. Sewing - machines, driving; illuminating - apparatus. - Built-in driving and lighting devices for a drop-head cabinet sewing-machine are run in parallel from a single supply circuit, so that the illumination in independent of the motor control. Two apertures 15, 21 are formed in the rear of the bracket arm 6. In the larger aperture 15 is rigidly mounted a motor 14 geared to the needle-shaft 10, and connected through a conduit 19 within the bracket-arm to a distributing point 46, to which is also connected the supply leads 3 and the motor-controller circuit. A bushing 23 is fixed in the smaller aperture 21 and receives the end of a conduit 29, which is flared and clamped by the tapered end 30 of an elbow 31, screwed into the bushing. Leads 36 for an electric lighting device 35 mounted on the free end of the elbow 31, pass down the conduit 29 within the bracket arm and are connected to the supply leads at 48 in parallel with the motor circuit. The sewing head is fitted with a spring-supported lifting plate 42, hinged at 43. Specification ] 83,738 is referred to.
Patent GB-615692-A (GB)
Title: Improvements in or relating to electrical connectors
IPC: H02G3/20
Filed: 1946-08-06
Abstract: 615,692. Two-part couplings; ceiling roses. MASON, O. Aug. 6, 1946, No. 23338. [Class 38 (i)] In an electrical connector, e.g. a ceiling rose, comprising two contact supporting parts 11 and 13, the fixed part 11 is formed with an undercut groove 12, and the lower detachable part 13 is adapted to slide into the groove. The upper fixed part 11 may consist of two portions 14 and 15, the portion 14 being provided with spring-biassed plunger terminals 16 and the portion 15 being provided with the undercut groove. The terminals 16 project through apertures 17 in the grooved portion for cooperation with terminals 22 in the detachable sliding part 13. The lower fixed portion 15 is provided with three apertures 34 in line with apertures 30 in the upper fixed portion 14, whereby the lower portion may be secured to the upper portion and to the ceiling. The undercut groove 12 in the portion 15 is open at one end and terminated at the other by a thin wall 35 formed integrally with the portion 15. The open end of the groove is provided with a plate 36 of substantially the same shape as the cross-sectional shape of the groove 12, but the edges 51 of the plate corresponding with the inclined side of the groove project slightly above the level thereof to maintain the sliding part in position. The sliding part 13 has a flat upper surface 38 and bevelled sides 39, while the lower surface is provided with an externally screw-threaded circular spigot 41, containing terminals 43 which extend through the sliding part 13 so as to co-operate with the terminals 16. The centre part of the upper surface of the sliding part is inclined at one end 50 so that when the sliding part is inserted into the groove the downwardly projecting spring plungers 28 of the upper terminals 16 ride up the incline and bear resiliently against the upper contact ends 22 of the terminals 43, when the sliding part is in position. In a modification the detachable part of the connector may be grooved and the fixed part provided with tongues.